Eccentric rotary valve with control-improving wing member

Details Eccentric rotary valve with control-improving wing member Eccentric rotary valve with control-improving wing member

1979-06-04

1981-03-17

Cline, William R.

Valves and valve actuation

Balanced valves

Rotary

251298, F16K 3906, F16K 120

Patent

active

042562856

ABSTRACT:
The two supports for the plug in an eccentric rotary valve are joined and rotatively coupled by a wing member. As the plug is rotated from its closed position on the cooperating seat by the rotation of a shaft fixed to one of the plug supports, the wing member lies in the fluid flowing through the valve. This fluid flow causes the wing member to exert a rotative force on the shaft in the direction to move the plug in its valve-opening direction. This force shifts the inherently unstable control region of a rotative force, which the fluid flow causes the plug to exert on the shaft, and thereby extends and widens the range of the plug positions in which an external rotative force applied to the shaft, as by a valve actuator, can uniquely determine, and exert exclusive control over, the shaft and plug positions.

REFERENCES:
patent: 3475003 (1969-10-01), Paluszek
patent: 3937441 (1976-02-01), Baumann
patent: 3963211 (1976-06-01), Myers
patent: 4103868 (1978-08-01), Thompson
patent: 4193578 (1980-03-01), Brumm

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